Flour sifter



Jah. 22, 1946. Y Y. I JT. BAILEY l 2,393,453l

FLOURSIFTER y Filed March 4, 1944 2 Sheeizs--Slerl'I 1 a CUP) 3.9 "W1 2Sheets-Sheet 2 ull!" gli,

- BY. i mwf@ yPatented Jan. 22,1946 Ai A Y Y l v,

UNITED 1 STATES PATENT i OFFICE e FLoR sufran MTheodore Bailey, Habana,"Aipli'eamm March 4, 1944, seriainelfszaov l 'gcni'infisgAV (ci.zoe-*251)l f This invention,l appertains' lto new. and useful comprisedLinan open ended receptacleor drumv improvementsiin flour sifters of thetype disand. afsiftingmeans lcentered within thevsame closed in my priorLetters Patent of the United to 'divide its interior'into two endcompartments,

States, No. 2,204,920, issued June 12, 1940, and one of which vhasgitsopen end'provided with a has for one of its several objects to introduce5 normallyy'closed` dischargeroutlet and the other certain` refinementsin structure and varrangeits open 1 end closed byl a' detachable coverin ment o frparts deemed necessary to meet the everwhich a `hand-crankis mounted for coupling to growing demand for simplication in construc-Vtheoper'ating shaft of the Vsifting means, The tin, increasedeiiiciency,and1ower cost tomanreceptacleisside bracketed to a wall orother ufacture. supportriorend-for-endturning movements 'forAnotherobject of the invention is to provide the purpose'of siftinglaquantity of iiour from 4 a. `sifter body` with `two Mchambers kor,compartone. compartment to ythe other a'requirednumber ments, separatedby the sifting omechanism, so of, times to reduce :the flour to adesired degree that a supply of flour, may be screened a number offineness, necessaryv to the making of light andv of timesbetween thechambers Yor compartments iiuiy breads, cakesA andv pastries. .A handleis' for the purpose of producing a lighter and iiuflier provided, .onthe side of the receptacle, opposite flour `for the making of betterbreads, cakes and its supporting bracket,.to facilitate itsend-forpastries. end turning movements.` :When the sifting is Another,ob-ject of `the invention has to do with completed, the flour shouldhave been' last-sifted the provisionof an` improved and more simplied 20from the upper compartmentv into the. lower sifting mechanismwhichefliciently speeds up 'the compartment ,for itsV delivery from thedischarge sifting operationvand, at the same time, is eiiec.voutletoftlie latter. y f Y tive ine'breaking down the flour to thedesired Specifically, the receptacle is indicated at II lightand fluffystate. and itmay be formedv of Vany suitable material,

With these andl other objects and advantages 259such vas aplastic,metal, or laminated wood, but,

f in view, the invention Aresides in the certain new for theipurpose ofthe presentdescription, it .will

andy useful combination, construction and arbe assumed to be made ofaf'plastic and, prefer rangement. of parts, as will be hereinafter moreably, one that is transparent in character. As kfully described, setforthV in the appended claims, beforeI stated, the` ends Aof. thereceptacle I I `are and illustrated in the accompanying. drawings, 3f.yopen; andtheseends will eachrbe. provided with in which: i o I. a metalreinforcement'lZ. LAS shown in Figures l Figure 1 is a side elevation,partly in section, of land 7, the reinforcements are identical in structhe improved sifter, in accordance with the inventure, each beingjofannular form and U-shaped tion; in cross section t provide inner andouter anges Figure 2 is a fragment of the' sldefwallof the 35 I 3 and I`4,*-for snug tting engagement over the sifterv body and showing theattached, portionrof edge ofanopen end.i .Each reinforcement I2 is thesupporting means; Y Y permanently `secured vinplace by tongues I5 Figure3 Y is v a face viewA of the supporting struck inwardly from the outerflange I4 and into bracket to be engaged by the attached portion Yengagement with ,complementall aperturesv .I6

on the sifter body;

40y formed inthe Ywall of the receptacle II, inwardly,

Figure 4 is a top plan View of the sifter andl ofthe ledge ofthe innerange l3,.which is ,of av its supporting bracket, the closure for theYopen lesserwidth than'that of the outer flange I4.,Y

end ofthe sifter body being removed; e A discharge fitting, preferably.ofa reducer type,V

` Figure v5 is a top plan view of the inner ofthe is detachablyengagedover thereinforcement I2 cross-bar supports for the siftermechanism; at the lower` end of the receptacle II, and it is Figure 6 isan enlarged sectional detail takenV comprised by a; hollow,frusto-conical, portion I8,

on the line 6'-6'of Figure 1i' and, whichfhasY annular flanges I1 and I9respectivelyV Figure '7 is an enlarged sectional detail of an encirclingits VVupper and Vlower' ends, the upper openV end portion of the sifterbody and `showing flangev I1 being engaged'over'the outer ange'll, areinforcing means therefor, particularly whenn of the reinforcement, andhaving its edge prothe body is made of a plastic. n videdwth 'a wireenclosed bead 20 for its own Referring to the drawings, wherein likecharreinforcement. The upper flange I1 is alsovproacters of vreferenceVdenote corresponding parts videdat its inner side with severalequidistantly meine several news, the embodiment of the inspaced studs2I which are adapted Vfor-engage@A vention, asl itis exemplied therein,is. generally 55 ment with-fc'omplementa'l bayonet slots 22, formed;

in the outer ange I4 of the reinforcement I2,

to retain the reducer fitting in place. A detachable closure 23 isprovided for the lower end of the reducer tting I8, and it has anannular flange 24 for eng-agement over the lower ilange 5 I9 of thefitting, with its edge reinforced with a wire enclosed bead 25 and itsinner side provided with several equidistantly spaced studs 26 forengagementwith complemental bayonet slots 21 formed in ...the lower.flange I9- The othem. i.. e., normally upper; openend of the body; II ispro-v vided with a detachable closure 28 that has an annular flange 29to engage over the outer iiange.y I4, of the reinforcement I2, and itsedge reinforced by a wire enclosed bead 30. The innerl 15 side of theiiange 29 is provided with. several equidistantly spaced studs 3I forengagement with complemental bayonet slots 32Lformedrix1athey outerflange I4 of the reinforcement I2.

Mounted within the body or receptacle II as thus constructed, and; 1centered. therein with: ree. spect'gto` the.` endsiofthesame; isfa:sifting-.rmeanse thatis supported on-av channeled.. crossz-:baror:v beam33', which'isrsupportedffrom.aeflange 3:44. inturned fromthelowersedge.ofamannularzmetal... band 35.that .is secured by rivetsLor: theflke 3.6?. tothe wallof thereceptacle: '1`hecross-ibar` 33l hasits ends-securedtothe ange;;3.4;,at:.diametricallyT opposite pointsvvthereon, in any;` suitable mannenas by beingzsoldered'orrrivetedthereto,` 3.0 and is provided with acircular:openingi'atdts cem iter for.r the proj ectionv downwardly.v therethrough.I of itheloweriiattened-end portiorr31 of a. shaft; 33; The projectingendgofitheffiattenedfportion\ 3T passes through'a; washer:- 39," thatseats within. 35 thegchannel in thelower: side of, thetcross-'bar 33,land carries accross-pin .40.1limmediately 'below' the washer.Thefshafta is;sl'roulderechl as at:

4 I at the connected `endzof the: flattened portion 31,. and. is. of"circular cross-sectiony for the're- 4 mainder of its length,` exceptthat its extreme .up per end is also flattened to form a:.coupli'ng:ele.ment-42. 'Ifhe outer end of the shaft ,38; immediately belowthe-coupling element 42,; is journalled: in a; cross..bar.` 43j thathas:its.r ends secured," asf byv soldering, to the-innerfflangef I3 of'the.reinforcement I2. Mounted-.centra-llyin"thaend wail of the closure -28fis a bearingelement 44:.forvth'einner crank: end portion/ ot a,.hand-crank46lthe `innerend of-the'crankl portion .45: being cross-1` 50slotted. for engagement with the couplingelement: 42, of the shaft 38",,when theclosure'28is -placedf in lposition onthe receptacle;Azhandgrip' 4Tis loosely'mountedy on the Louter crank end 'portioni ofvthe hand crank ase-toi facilitate its manipulation 55 for impartingaturning :motion to' theshaft.v

, Engaged on the'flattened--portion-31;J oflfth'e shaft 38,'- is a.doublesifting-.memberthat fis ccmprised in: twowre mesh` discs 48 land'49 Lwhich arereinforced at their respective edges'bylannular'- metalmembers 501and-5'I, thaty may beformed" of al heavyv gaugey wire, which;are preferably undulatory, i. er, waveform; tocorrugate-the. discsradiallyfrom1 theirv centers; so '-as"to addi.; tionarllyl agitate' theflour imita-passage; fronrone" compartmenttogthe other: The discs 48,``4.91am suDpOrtedat their inner sides by. spiders ,53`1and- 54,'.respectively, which'. are -.mounted at. their..cen ters onthe attenedlower. endportionl otthe. .70 shaft 38.; together ,with an,interposed-.spacer .fdisd 55,1;against the upper andlowerends,..of.which.` the spiders. and-their associated- ,screenadist-:share: respectivelyclamped ,by `annularfmembers 56.vandf; 551, the:lower: offwhichfis supportedtonzthercrossel bar 33. The annular member5-1 is stationary on the cross-bar 33 and forms a, bearing for thesifting means, including the spacer disc and the annular member 56,which is rotated, together with the washer 39, when the shaft 38 isturned. The radial arms of the spiders 53, 54, have their louter endssecured to the annular members 50 and 5I, respectively, which areinterconnected by a plurality of spacer elements 58 that areequidistantlydspaced .about the-.same anhave their endsi secured to thesame,as by=being. soldered thereto. The length of these spacer members58 isigreater than the height or thickness of the spacer disc 58, sothat the screen discs 48, 49, are oppositely dished, substantially as isshown in Fguresl. and.

To mount the receptacle I I for its required end reversinglmovem-ents,a. wall bracket is provided in theiorm of a metal plate that has endsecuring portions 59 angularly oiiset from an intermediate. parallehportion 6IJ- which l islslotted, as ati Eil .downwardly fromzits upperangledl Lendf to receive; aaheaded: gud'geonA 621 projectingy from asupporting plateaBStthat-is. secured to -the adjacentfsideioffthe.receptacle; The: supportingr plate t3zisisecured',4 asat64;1 tothe receptacle-at a point intermediater itsendssand.I slightlyabove its trans.. verser center, so. thatlthefreceptacle will,` of'itsvovvrr volition; assumes an uprightV position in the-f bracket, with itsdischarge outlet downwardly' directed'. For reversing the receptacle II,and steadying: it. duringrthe turning ofthe hand-- crank'145; a handle.35:.is secured, as byv 4the rivets 651, toxtheasidev-,wall ofthereceptacle atapoint thereon oppositetthe. gudgeonsupporting p'late163For the purposefotdeterminingthe-quantity ofv flour placed:withinonezortheother ofthe-com-` partments, above and below the sifter unit,or formeasuringv anramount of they sifted-flour from marked :withparallel, circumferentially extending; lines,l whichLarespaced-l axiallyof the? wall at` intervals` corresponding.. to` cupfuls'of iiour andthese lines will be numerically designed pro- 5f g-ressively"V from.opposite sides'V of the-'lsifter unit tovward:th'e;endsv.lofr thereceptacle.rv

In thefoperation of.,` the `deviceytheupper com mrpartrrnent of 5thetreceptacle I.I :mayy ybe supplied witlrA ax.- quantity vof: ourlto-vbe sifted lupon the removal of thefclosure- 281, eitherwith the`recep tacle supported from the bracket 60 or removedtherefrom`With-fthe@replacingn of the=1closuref28, the1slot :in-the end :'of.thefinner portion 43, of thehand-crank 44, will be engaged with thecoupling 4' cran'k. 44; the .iiour will; pass through. the screen discs48; 45; and.'back.intu-the. upper comparte. ment..By.thusrreversing..thereceptacle II for repeated. siftingy vof lthe.''our, thet flour will.r be

, reduced to..-a,. desired light and. fluff-y condition,-` necessary tomeet the#present*dayygdemandifor'/ lignt'breads, cakes and'fpastries.;Torextractta quantity yofithezsited flourrfrom the-f receptacle,

ther lower'. closure: 2651s removed fromthe diss ze chargezoutletfinlthe'reducer'fitting:i I8? frthee vaeoanse down ow of the flour into acont-ainer held or positioned beneath the outlet.

Having thus fully described a preferred embodiment of my invention, itis to be understood that various changes in material, size, shape andarrangement of parts, may be resorted to, without departing from thespirit of the invention or its scope as claimed.

What I claim is:

l. A flour sitter comprising an elongated cylindrical body open at bothends, a pair of oppositely dished discs of Wire mesh connected to form asifter screen unit mounted centrally of the body to divide its interiorinto upper and lower compartments, undulatory reinforcements boundingand exteriorly of the body for rotating the sifter unit in which thespiders are mounted, removable closures vfor the open ends of the bodyand means for mounting the body forend-to-end reversing movements sothat the our can be repeatedly sifted from one compartment to the otherand until it is reduced to a desired degreev of ineness,

2. A flour sifter, comprising an elongated receptacle having a llingopening at one end and a dispensing opening at the other, closures forsaid openings, a pair of rotatably mounted relatively spaced meshsifting members between the ends of the body, means for rotating themembers, each member being corrugated and concave with the concave facesopposed to each otherand facing the ends of the receptacle, said siftingmembers partitioning the receptacle into upper and lower compartmentsbetween which our is adapted to be passed through said sifting members,and means movably mounting the receptacle to shift the flour.

3. A flour sifter, comprising an elongated receptacle having a fillingopening at one end and a dispensing opening at the other, closures forsaid openings, a pair of rotatably mounted relatively spaced foraminatedsifting members between the ends of the body, means detachably engagingthe members for rotating the members, each member being corrugated andconcave with the concave faces opposed to each other and facing the endsof the receptacle, unclulatory edge reinforcements for said siftingmembers maintaining the corrugated concave formation thereof, a pair ofspiders, one supporting the under face of each sifting member, and eachspider connected to a reinforcing member, a spacer connecting thespiders at the center, spacers connecting. the sifters at their edges,said sifting dle is carried by the closure for the lling opening anddetachably engages the shaft, and wherein upper and lower clampingvmembers are provided for holding the spiders against the spacer. 1

5. The invention as defined in claim 3 wherein the receptacle is hollow,and cylindrical, and the sifters lare formed of wire mesh and are diskshaped and are supported by spiders clamped to a spacer at theircentralpoints, and wherein the edge spacers are longer than the combinedthickness of the spider and the center spacer to preserve the concaveshape of the disks.

THEODORE BAILEY.

